EP 1270534 A1 20030102 - Surgical blade for cataract surgery
Title (en)
Surgical blade for cataract surgery
Title (de)
Skalpellklinge für Katarakt-Operationen
Title (fr)
Lame de scalpel pour opérations de cataracte
Publication
Application
Priority
EP 01810613 A 20010622
Abstract (en)
Production of a scalpel blade made from a ceramic comprises hot isostatically pressing the blade as a porous crude form in a noble gas atmosphere to bond the pores; lapping the crude form having the bonded pores; pre-grinding the lapped crude form to form a blade; polishing and cleaning the blade; and coating with an amorphous carbon. Preferred Features: The hot isostatic pressing is carried out at a pressure of 1350 bar and a temperature of 1960 degrees C. The noble gas is argon. The lapping is carried out using a monocrystalline diamond powder having a grain size of 0.5-0.75 mu m and polished with a monocrystalline diamond powder having a grain size of maximum 0.1 mu m.
Abstract (de)
In einem Verfahren zur Herstellung einer Katarakt-Skalpellklinge aus Keramik wird die Skalpellklinge als poröse Rohform in einer Edelgas-Atmosphäre heiss-isostatisch gepresst, um Poren der Rohform zu verschweissen. Darauf wird die verschweisste Poren aufweisende Rohform geläppt, die geläppte Rohform zu einer Klinge vorgeschliffen, die vorgeschliffene Klinge poliert, die polierte Klinge gereinigt und die gereinigte Klinge mit amorphem Kohlenstoff beschichtet. <IMAGE>
IPC 1-7
IPC 8 full level
A61F 9/013 (2006.01); C04B 41/50 (2006.01); C04B 41/85 (2006.01)
CPC (source: EP)
A61F 9/0133 (2013.01); C04B 41/009 (2013.01); C04B 41/5001 (2013.01); C04B 41/85 (2013.01); C04B 2111/00836 (2013.01)
C-Set (source: EP)
Citation (applicant)
DE 19652098 A1 19980625 - AMANN & TRITT GMBH [DE]
Citation (search report)
- [A] US 6056764 A 20000502 - SMITH THOMAS C [US]
- [AD] DE 19652098 A1 19980625 - AMANN & TRITT GMBH [DE]
- [A] DATABASE WPI Week 199738, Derwent World Patents Index; AN 1997-413542, XP002183776
- [A] V.L. ARBUZOV ET AL., DIAMOND RELAT. MATER., vol. 3, no. 4-6, 1994, pages 775 - 778, XP002183775
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01810613 A 20010622